Quote Originally Posted by lat9 View Post
Thanks for the update; I'll give that a look-see a bit later.
OK, I created a fresh install using PHP 8.4.3 of the as-shipped Zen Cart 2.1.0 and copied over the Bootstrap 3.7.7 files.

Made Bootstrap the template and reset its sideboxes to match those of the built-in responsive_classic.

Displayed a product, resulting in no log files generated.